Improvement in grain-drills



UNITED 'STATES P'rEiv'rN OFFICE. i

BENJAMIN KUHNS, OF DAYTON, OHIO.

IMPROVEMENT IN GRAIN-DRILLS.

Speciiication forming part of Letters Patent No. 116,719, dated July 4,1871.

To all whom it may concern.:

Be it known that I, BENJAMIN KUHNs, oi Dayton, in the county ot'Montgomery and Sta-te ot' Ohio, have invented a certain Improvement inGrain-Drills; and I do hereby declare that the following is a full,clear, and exact description thereof, reference bein ghad to the annexeddrawing making part of this speciiication, in which- Figure l is a planview ot' so much ot' the frame of a grain-drill as is necessary toillustrate my invention. Fig. 2 is a bottoni view thereof. Fig. 3 is alongitudinal section.

The same letters are used in all the figures in the designation ofidentical parts.

This invention relates to that class of graindrills in which the hoesare changeable from sin gle-tile to double-tile, and vice versa; and myimprovement consists in hinging the movable (ilrag-bars to a bar whichis suspended b, f arms at each end from stationary studs on the frame,and held in one position or the other by two studs playing throughapertures in thc frame and forming part of a spring-lever arranged onone side of suoli frame, as will be generally explained in the followingdescription and specifica] ly pointed out in the claim.

In the annexed drawing, A ret'ers to the framework of a grain-drill,constructed with a crossbeam, A', to which the stat-ionary drag-bars, B,carrying the stationary hoes, are hinged. Every alternate one of thedrag-bars is movable, and those, marked O, are hinged to a bar D,located in front of the beam A. This bar extends from side to side ot'the frame, between its longitudinal beams, and has an arm, D1, at eachend, by means of which it is suspended from projecting studs D2 whichare securely fastened to the frame. These studs may, however, be formedon the arms of the bar and turn in suitable bearings, if preferred. Oneof the arms is extended above the pivoted stud D2 to torni a suitablehandle D3, by means of which. the bar may be oscillated. It Will beunderstood that on drawing the machine forward the hoes, entering theearth, will oscil late the bar D rearward as far as its arms arepermitted to swing. The movement of the bar is controlled by two studs,e and e1, which play through apertures in one of the longitudinal beamsof the frame A, so that when projected the rear edge ot' the arm Dl uponthat end ofthe bar D will come in contact with one or the other otthesestuds, according to the position which the changeable hoes shall occupywith reference to the stationary ones. When the hoes are to stand in arow the arm ofthe bar D is brought ibi-ward ot the stud e, but when thehoes are arranged in a zigzag' line the arm ot' the bar D will occupythe position shown in Figx, so as to come in contact with the stud e1.The studs e and c1 form part oi' one arm of a lever, E, which is pivotedupon a stud, e2, on the outside of the frame so as to move in ahorizontal plane. The arm of the lever carrying the studs e and el iskept in contact with the .trame by means of a spring, E', acting uponthe other arm, as clearly shown in Figs. l and 2. On changing the hoesfrom one position to the other the studs e and e1 are temporarilywithdrawil into the frame by turning the lever E.

What I claim as my invention, and desire to V secure by Letters Patent,is

In combination with the oscillating bar D, to

which the changeable drag-bars are hitched, and its arms D1 D1, thestuds e and e1 which play through the side beam of the frame, and areretracted an d projected by means suoli as described, or equivalentmeans, all operating in the manner set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

BENJAMIN KUHN S.

Witnesses J. F. LEN'rz, GEO. M. YOUNG.

